I'm using a 2 year old laptop with Windows Vista. I want to start over and only use Ubuntu. How can I wipe my entire hard disc clean, including the 2 partitions and start all over with one partition and then install Ubuntu? I want to have EVERYTHING removed from my hard disc, 100 percent blank slate. Can anyone please tell me how I should do this? Thanks very much! :-)
You can use the Disk Utility for that. It's a graphical tool that will show you the current partitions on your hard drive. You can then click on each partition and select Delete Partition.
The Disk Utility is available when you run the Ubuntu from the Live CD. After deleting all partitions you can install Ubuntu and it will create the necessary partitions for you.
There exists a liveCD called Darik's Boot and Nuke that will help you with that: http://www.dban.org/
Basically, you download the iso, burn it on a CD, then boot on said CD. All partitions (INCLUDING connected external hard drives of USB thumb drives or anything, so be careful) will be erased. The process will take a few hours and your hard drive will be blank.